US6301124B1 - Computer chassis identification method - Google Patents

Computer chassis identification method Download PDF

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Publication number
US6301124B1
US6301124B1 US09/245,149 US24514999A US6301124B1 US 6301124 B1 US6301124 B1 US 6301124B1 US 24514999 A US24514999 A US 24514999A US 6301124 B1 US6301124 B1 US 6301124B1
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United States
Prior art keywords
chassis
system board
spring action
conducting pads
logic circuit
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US09/245,149
Inventor
Ayedin Nikazm
Steve J. Brame
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Dell USA LP
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Dell USA LP
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Assigned to DELL U.S.A., L.P. reassignment DELL U.S.A., L.P. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRAME, STEVE, NIKAZM, AYEDIN
Application filed by Dell USA LP filed Critical Dell USA LP
Priority to US09/245,149 priority Critical patent/US6301124B1/en
Priority to AU41062/99A priority patent/AU4106299A/en
Assigned to DELL USA, L.P. reassignment DELL USA, L.P. CORRECTIVE ASSIGNMENT TO CORRECT THE ADDRESS OF THE ASSIGNEE, FILED 02-4-99, RECORDED AT REEL 9770 FRAME 0598. ASSIGNORS HEREBY CONFIRM THE ASSIGNMENT OF THE ENTIRE INTEREST. Assignors: BRAME, STEVE, NIKAZM, AYEDIN
Priority to JP11229928A priority patent/JP2000235431A/en
Priority to KR1019990036082A priority patent/KR20000056973A/en
Priority to US09/661,001 priority patent/US6449579B1/en
Publication of US6301124B1 publication Critical patent/US6301124B1/en
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Assigned to BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS FIRST LIEN COLLATERAL AGENT reassignment BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS FIRST LIEN COLLATERAL AGENT PATENT SECURITY AGREEMENT (NOTES) Assignors: APPASSURE SOFTWARE, INC., ASAP SOFTWARE EXPRESS, INC., BOOMI, INC., COMPELLENT TECHNOLOGIES, INC., CREDANT TECHNOLOGIES, INC., DELL INC., DELL MARKETING L.P., DELL PRODUCTS L.P., DELL SOFTWARE INC., DELL USA L.P., FORCE10 NETWORKS, INC., GALE TECHNOLOGIES, INC., PEROT SYSTEMS CORPORATION, SECUREWORKS, INC., WYSE TECHNOLOGY L.L.C.
Assigned to BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT reassignment BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT PATENT SECURITY AGREEMENT (ABL) Assignors: APPASSURE SOFTWARE, INC., ASAP SOFTWARE EXPRESS, INC., BOOMI, INC., COMPELLENT TECHNOLOGIES, INC., CREDANT TECHNOLOGIES, INC., DELL INC., DELL MARKETING L.P., DELL PRODUCTS L.P., DELL SOFTWARE INC., DELL USA L.P., FORCE10 NETWORKS, INC., GALE TECHNOLOGIES, INC., PEROT SYSTEMS CORPORATION, SECUREWORKS, INC., WYSE TECHNOLOGY L.L.C.
Assigned to BANK OF AMERICA, N.A., AS COLLATERAL AGENT reassignment BANK OF AMERICA, N.A., AS COLLATERAL AGENT PATENT SECURITY AGREEMENT (TERM LOAN) Assignors: APPASSURE SOFTWARE, INC., ASAP SOFTWARE EXPRESS, INC., BOOMI, INC., COMPELLENT TECHNOLOGIES, INC., CREDANT TECHNOLOGIES, INC., DELL INC., DELL MARKETING L.P., DELL PRODUCTS L.P., DELL SOFTWARE INC., DELL USA L.P., FORCE10 NETWORKS, INC., GALE TECHNOLOGIES, INC., PEROT SYSTEMS CORPORATION, SECUREWORKS, INC., WYSE TECHNOLOGY L.L.C.
Assigned to DELL INC., APPASSURE SOFTWARE, INC., ASAP SOFTWARE EXPRESS, INC., FORCE10 NETWORKS, INC., DELL SOFTWARE INC., PEROT SYSTEMS CORPORATION, COMPELLANT TECHNOLOGIES, INC., WYSE TECHNOLOGY L.L.C., DELL MARKETING L.P., SECUREWORKS, INC., CREDANT TECHNOLOGIES, INC., DELL USA L.P., DELL PRODUCTS L.P. reassignment DELL INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANK OF AMERICA, N.A., AS ADMINISTRATIVE AGENT
Assigned to DELL USA L.P., DELL SOFTWARE INC., DELL INC., PEROT SYSTEMS CORPORATION, WYSE TECHNOLOGY L.L.C., SECUREWORKS, INC., DELL MARKETING L.P., ASAP SOFTWARE EXPRESS, INC., CREDANT TECHNOLOGIES, INC., APPASSURE SOFTWARE, INC., DELL PRODUCTS L.P., COMPELLENT TECHNOLOGIES, INC., FORCE10 NETWORKS, INC. reassignment DELL USA L.P. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Assigned to WYSE TECHNOLOGY L.L.C., FORCE10 NETWORKS, INC., COMPELLENT TECHNOLOGIES, INC., DELL PRODUCTS L.P., DELL USA L.P., ASAP SOFTWARE EXPRESS, INC., DELL SOFTWARE INC., DELL INC., DELL MARKETING L.P., SECUREWORKS, INC., CREDANT TECHNOLOGIES, INC., APPASSURE SOFTWARE, INC., PEROT SYSTEMS CORPORATION reassignment WYSE TECHNOLOGY L.L.C. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS COLLATERAL AGENT
Assigned to CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT reassignment CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, AS COLLATERAL AGENT SECURITY AGREEMENT Assignors: ASAP SOFTWARE EXPRESS, INC., AVENTAIL LLC, CREDANT TECHNOLOGIES, INC., DELL INTERNATIONAL L.L.C., DELL MARKETING L.P., DELL PRODUCTS L.P., DELL SOFTWARE INC., DELL SYSTEMS CORPORATION, DELL USA L.P., EMC CORPORATION, EMC IP Holding Company LLC, FORCE10 NETWORKS, INC., MAGINATICS LLC, MOZY, INC., SCALEIO LLC, SPANNING CLOUD APPS LLC, WYSE TECHNOLOGY L.L.C.
Assigned to THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT reassignment THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT SECURITY AGREEMENT Assignors: ASAP SOFTWARE EXPRESS, INC., AVENTAIL LLC, CREDANT TECHNOLOGIES, INC., DELL INTERNATIONAL L.L.C., DELL MARKETING L.P., DELL PRODUCTS L.P., DELL SOFTWARE INC., DELL SYSTEMS CORPORATION, DELL USA L.P., EMC CORPORATION, EMC IP Holding Company LLC, FORCE10 NETWORKS, INC., MAGINATICS LLC, MOZY, INC., SCALEIO LLC, SPANNING CLOUD APPS LLC, WYSE TECHNOLOGY L.L.C.
Anticipated expiration legal-status Critical
Assigned to MOZY, INC., DELL INTERNATIONAL, L.L.C., DELL USA L.P., DELL SOFTWARE INC., EMC IP Holding Company LLC, DELL PRODUCTS L.P., CREDANT TECHNOLOGIES, INC., WYSE TECHNOLOGY L.L.C., AVENTAIL LLC, DELL SYSTEMS CORPORATION, FORCE10 NETWORKS, INC., DELL MARKETING L.P., EMC CORPORATION, SCALEIO LLC, ASAP SOFTWARE EXPRESS, INC., MAGINATICS LLC reassignment MOZY, INC. RELEASE BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). Assignors: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH
Assigned to DELL USA L.P., DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO ASAP SOFTWARE EXPRESS, INC.), DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.), EMC CORPORATION (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MAGINATICS LLC), DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.), SCALEIO LLC, DELL PRODUCTS L.P., DELL INTERNATIONAL L.L.C., EMC IP HOLDING COMPANY LLC (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MOZY, INC.) reassignment DELL USA L.P. RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (040136/0001) Assignors: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
Assigned to DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.), DELL USA L.P., DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO FORCE10 NETWORKS, INC. AND WYSE TECHNOLOGY L.L.C.), EMC IP HOLDING COMPANY LLC (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MOZY, INC.), DELL INTERNATIONAL L.L.C., EMC CORPORATION (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO MAGINATICS LLC), DELL MARKETING CORPORATION (SUCCESSOR-IN-INTEREST TO ASAP SOFTWARE EXPRESS, INC.), DELL PRODUCTS L.P., SCALEIO LLC reassignment DELL MARKETING L.P. (ON BEHALF OF ITSELF AND AS SUCCESSOR-IN-INTEREST TO CREDANT TECHNOLOGIES, INC.) RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL/FRAME (045455/0001) Assignors: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS NOTES COLLATERAL AGENT
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1438—Back panels or connecting means therefor; Terminals; Coding means to avoid wrong insertion
    • H05K7/1452—Mounting of connectors; Switching; Reinforcing of back panels
    • H05K7/1455—Coding for prevention of wrong insertion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/18—Packaging or power distribution
    • G06F1/181—Enclosures

Definitions

  • This disclosure relates to the field of computer systems, and, more particularly, to apparatus and methodologies for determining whether a personal computer system board has been installed in the correct personal computer chassis.
  • a personal computer system board needs to recognize whether it is installed in the correct personal computer chassis. Such recognition is necessary because the system board functions differently depending on the type of chassis. Previously, encoded riser cards or jumper settings were used to determine whether the system board was installed in the correct computer chassis. However, these methods have either become obsolete or are not efficient. Accordingly, what is needed is an apparatus and a methodology for automatically determining whether a system board has been installed in the correct type of computer chassis.
  • the present disclosure describes an apparatus and a method to allow a computer system board to automatically identify the personal computer chassis in which the system board is installed.
  • the apparatus includes a) at least one conducting pad on the system board, b) at least one spring action grounding clip on the chassis, and in contact with the at least one conducting pad, and c) a logic circuit connected to the at least one conducting pad.
  • the method includes the steps of a) attaching at least one spring action grounding clip to the chassis, b) incorporating at least one conducting pad into the artwork of the printed wire assembly on the system board, c) connecting at least one conducting pad to a logic circuit on the system board, d) installing the system board in the chassis, and e) ensuring that at least one spring action grounding clip contacts at least one conducting pad.
  • FIG. 1 is a partial cross-sectional view of a preferred embodiment.
  • FIG. 2 is a bottom view of a system board.
  • FIG. 3 is a top view of a computer chassis with one grounding clip.
  • FIG. 4 is a top view of a computer chassis with two grounding clips.
  • FIG. 5 is a schematic of a logic circuit on the system board.
  • an assembler attaches a spring action grounding clip 1 to a predetermined position on a computer chassis 3 .
  • a designer incorporates a conducting pad 4 into the artwork of the printed wire assembly on a corresponding position op the bottom side of a system board 5 .
  • the conducting pad 4 connects to a logic circuit 6 on the system board 5 .
  • the assembler then installs the system board 5 in the computer chassis 3 , so the spring action grounding clip 1 makes contact with the conducting pad 4 on the system board 5 .
  • Contact between the spring action grounding clip 1 and the conducting pad 4 causes a short circuit to ground, resulting in an output of logical zero on the logic circuit 6 (FIG. 5 ).
  • FIG. 2 illustrates a potential arrangement of conducting pads 4 on the bottom side of the system board 5 .
  • the designer incorporates three conducting pads 4 into the artwork of the printed wire assembly on the bottom side of a system board 5 .
  • the location of the conducting pads 4 on the system board 5 corresponds to the possible attachment sites 7 , 8 , and 9 of the spring action grounding clips 1 on the computer chassis 3 .
  • the computer chassis 3 has three possible attachment sites 7 , 8 , and 9 for the spring action grounding clips 1 .
  • the assembler may be instructed to attach spring action grounding clips 1 to some, all, or none of the attachment sites 7 , 8 , and 9 .
  • n equals the number of possible attachment sites
  • different chassis types may be identified using a preferred embodiment. The number of attachment sites may vary depending on the number of possible chassis types to be identified.
  • FIG. 3 illustrates a potential arrangement of spring action grounding clips 1 on the computer chassis 3 .
  • the assembler attaches the spring action grounding clip 1 to the computer chassis 3 at attachment site 7 .
  • the attachment of the spring action grounding clip 1 to the computer chassis 3 at attachment site 7 could correspond to a tower chassis.
  • FIG. 4 illustrates another potential arrangement of spring action grounding clips 1 on the computer chassis 3 .
  • the assembler attaches the spring action grounding clips 1 to the computer chassis 3 at attachment sites 7 and 8 .
  • the attachment of the spring action grounding clips 1 to the computer chassis 3 at attachment sites 7 and 8 could correspond to a desktop chassis.
  • the reference numeral 10 designates, in general, one embodiment of a computer for implementing the above described systems and methods.
  • the computer 10 includes the spring action grounding clip 1 , the chassis 3 , the conducting pad 4 , the system board 5 , and the logic circuit 6 .
  • the system board 5 may also include various system components such as one or more processors 12 , one or more storage devices 14 , and one or more input/output devices 16 including a monitor 16 a and a keyboard 16 b.
  • the computer 10 further includes the necessary power circuitry (not shown) connectable to a power supply 18 for receiving operating power.
  • the power supply 18 includes a ground receptacle for supplying a ground voltage to the chassis 3 .
  • the presence of the spring action grounding clip 1 on the computer chassis 3 causes a short circuit to ground, and an output of logical zero on the logic circuit 6 .
  • the logic circuit 6 registers an output of logical one.
  • Each conducting pad 4 has a separate logic circuit 6 associated with it. Accordingly, the output of the logic circuits 6 varies depending upon the presence or absence of spring action grounding clips 1 within the various attachment sites 7 , 8 , and 9 .
  • the varying outputs on the logic circuits 6 enable the system board 5 to recognize whether the system board 5 is installed in the correct computer chassis 3 .
  • the system board 5 compares the outputs of the logic circuits 6 with a look-up table in a memory of the system board 5 .
  • the look-up table indexes the logic circuit outputs corresponding to each particular chassis type. If the outputs of the logic circuits 6 correspond to the designated chassis in the look-up table, the system board 5 is installed in the correct computer chassis 3 . If the outputs of the logic circuits 6 do not correspond to the designated chassis in the look-up table, the system board 5 is not installed in the correct computer chassis 3 .

Abstract

An apparatus to allow a computer system board to automatically identify the chassis in which the system board is installed. The apparatus includes a) at least one conducting pad on the system board, b) at least one spring action grounding clip on the chassis, and in contact with the at least one conducting pad, and c) a logic circuit connected to the at least one conducting pad.

Description

TECHNICAL FIELD
This disclosure relates to the field of computer systems, and, more particularly, to apparatus and methodologies for determining whether a personal computer system board has been installed in the correct personal computer chassis.
BACKGROUND
A personal computer system board needs to recognize whether it is installed in the correct personal computer chassis. Such recognition is necessary because the system board functions differently depending on the type of chassis. Previously, encoded riser cards or jumper settings were used to determine whether the system board was installed in the correct computer chassis. However, these methods have either become obsolete or are not efficient. Accordingly, what is needed is an apparatus and a methodology for automatically determining whether a system board has been installed in the correct type of computer chassis.
SUMMARY
The present disclosure describes an apparatus and a method to allow a computer system board to automatically identify the personal computer chassis in which the system board is installed. The apparatus includes a) at least one conducting pad on the system board, b) at least one spring action grounding clip on the chassis, and in contact with the at least one conducting pad, and c) a logic circuit connected to the at least one conducting pad. The method includes the steps of a) attaching at least one spring action grounding clip to the chassis, b) incorporating at least one conducting pad into the artwork of the printed wire assembly on the system board, c) connecting at least one conducting pad to a logic circuit on the system board, d) installing the system board in the chassis, and e) ensuring that at least one spring action grounding clip contacts at least one conducting pad.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a partial cross-sectional view of a preferred embodiment.
FIG. 2 is a bottom view of a system board.
FIG. 3 is a top view of a computer chassis with one grounding clip.
FIG. 4 is a top view of a computer chassis with two grounding clips.
FIG. 5 is a schematic of a logic circuit on the system board.
DETAILED DESCRIPTION
Referring to FIG. 1, an assembler attaches a spring action grounding clip 1 to a predetermined position on a computer chassis 3. A designer incorporates a conducting pad 4 into the artwork of the printed wire assembly on a corresponding position op the bottom side of a system board 5. The conducting pad 4 connects to a logic circuit 6 on the system board 5. The assembler then installs the system board 5 in the computer chassis 3, so the spring action grounding clip 1 makes contact with the conducting pad 4 on the system board 5. Contact between the spring action grounding clip 1 and the conducting pad 4 causes a short circuit to ground, resulting in an output of logical zero on the logic circuit 6 (FIG. 5).
FIG. 2 illustrates a potential arrangement of conducting pads 4 on the bottom side of the system board 5. The designer incorporates three conducting pads 4 into the artwork of the printed wire assembly on the bottom side of a system board 5. The location of the conducting pads 4 on the system board 5 corresponds to the possible attachment sites 7, 8, and 9 of the spring action grounding clips 1 on the computer chassis 3.
Referring to FIGS. 3 and 4, the computer chassis 3 has three possible attachment sites 7, 8, and 9 for the spring action grounding clips 1. Depending on the type of chassis to be identified, the assembler may be instructed to attach spring action grounding clips 1 to some, all, or none of the attachment sites 7, 8, and 9. With multiple possible attachment sites 7, 8, and 9 to n (where n equals the number of possible attachment sites), different chassis types may be identified using a preferred embodiment. The number of attachment sites may vary depending on the number of possible chassis types to be identified.
FIG. 3 illustrates a potential arrangement of spring action grounding clips 1 on the computer chassis 3. Referring to FIG. 3, the assembler attaches the spring action grounding clip 1 to the computer chassis 3 at attachment site 7. The attachment of the spring action grounding clip 1 to the computer chassis 3 at attachment site 7 could correspond to a tower chassis.
FIG. 4 illustrates another potential arrangement of spring action grounding clips 1 on the computer chassis 3. Referring to FIG. 4, the assembler attaches the spring action grounding clips 1 to the computer chassis 3 at attachment sites 7 and 8. The attachment of the spring action grounding clips 1 to the computer chassis 3 at attachment sites 7 and 8 could correspond to a desktop chassis.
Referring to FIG. 5, the reference numeral 10 designates, in general, one embodiment of a computer for implementing the above described systems and methods. The computer 10 includes the spring action grounding clip 1, the chassis 3, the conducting pad 4, the system board 5, and the logic circuit 6. The system board 5 may also include various system components such as one or more processors 12, one or more storage devices 14, and one or more input/output devices 16 including a monitor 16 a and a keyboard 16 b. The computer 10 further includes the necessary power circuitry (not shown) connectable to a power supply 18 for receiving operating power. The power supply 18 includes a ground receptacle for supplying a ground voltage to the chassis 3.
In the computer 10, the presence of the spring action grounding clip 1 on the computer chassis 3 causes a short circuit to ground, and an output of logical zero on the logic circuit 6. In the absence of the spring action grounding clip 1, no short circuit to ground occurs, and the logic circuit 6 registers an output of logical one. Each conducting pad 4 has a separate logic circuit 6 associated with it. Accordingly, the output of the logic circuits 6 varies depending upon the presence or absence of spring action grounding clips 1 within the various attachment sites 7, 8, and 9.
The varying outputs on the logic circuits 6 enable the system board 5 to recognize whether the system board 5 is installed in the correct computer chassis 3. The system board 5 compares the outputs of the logic circuits 6 with a look-up table in a memory of the system board 5. The look-up table indexes the logic circuit outputs corresponding to each particular chassis type. If the outputs of the logic circuits 6 correspond to the designated chassis in the look-up table, the system board 5 is installed in the correct computer chassis 3. If the outputs of the logic circuits 6 do not correspond to the designated chassis in the look-up table, the system board 5 is not installed in the correct computer chassis 3.
Although illustrative embodiments have been shown and described, a wide range of modification, changes and substitution is contemplated in the foregoing disclosure. In some instances, some features of the disclosed embodiments may be employed without a corresponding use of the other features. Accordingly, it is appropriate that the appended claims be construed broadly and in a manner consistent with the scope of the invention.

Claims (9)

What is claimed is:
1. A personal computer having a chassis and a system board, and having an apparatus to allow the computer system board to automatically identify the chassis in which the system board is installed, the apparatus comprising:
a plurality of conducting pads formed on the system board in a pattern;
a plurality of attachment sites formed on the chassis in a pattern corresponding to the pattern of the conducting pads;
a separate logic circuit connected to each of the conducting pads;
a spring action grounding clip attached to at least one of the attachment sites for contact with a corresponding one of the conducting pads, the presence of the spring action grounding clip causing a first output to the respective logic circuit, the absence of the spring action grounding clip causing a second output to the respective logic circuit, whereby, depending on the first or second output being received, the system board automatically identifies the chassis in which the system board is installed.
2. The personal computer of claim 1, further comprising three conducting pads.
3. The personal computer of claim 2, further comprising three spring action grounding clips.
4. An apparatus for automatic identification of a chassis in a personal computer, the apparatus comprising:
a system board;
a plurality conducting pads formed on the system board in a pattern;
a plurality of attachment sites formed on the chassis in a pattern corresponding to the pattern of the conducting pads;
a separate logic circuit connected to each of the conducting pads; and
a spring action grounding clip attached at more than one of the attachment sites for contact with corresponding ones of the conducting pads, the presence of the spring action grounding clip causing an output of logical zero to the respective logic circuit, the absence of the spring action grounding clip causing an output of logical one to the respective logic circuit, whereby, in response to the output being received, the system board automatically identifies the chassis in which the system board is installed.
5. The apparatus of claim 4, further comprising three conducting pads.
6. The apparatus of claim 5, further comprising three spring action grounding clips.
7. A computer system comprising:
a chassis including at least one spring action clip electrically connected to a power source;
a system board connected to the chassis;
a plurality of conducting pads electrically connectable to the spring action clip, the pads being formed in a pattern in the system board;
a plurality of attachment sites formed on the chassis in a pattern corresponding to the pattern of the conducting pads, the spring action clip being attached to one of the attachment sites;
a separate logic circuit connected to each of the conducting pads for identifying the chassis and reporting the identification to the system board; and
wherein, when the chassis is positioned in the computer, an electrical connection is made from the power source, through the spring action clip, and through the conducting pad, the presence of the spring action grounding clip causing an output of logical zero to the respective logic circuit, the absence of the spring action grounding clip causing an output of logical one to the respective logic circuit, so that in response to the output being received, the system board automatically identifies the chassis in which the system board is installed.
8. The computer system of claim 7, further comprising two additional conducting pads so that a plurality of different chassis types can be identified by the different connections of the spring action clip and the conducting pads.
9. The computer of claim 8, further comprising three spring action clips.
US09/245,149 1999-02-04 1999-02-04 Computer chassis identification method Expired - Lifetime US6301124B1 (en)

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Application Number Priority Date Filing Date Title
US09/245,149 US6301124B1 (en) 1999-02-04 1999-02-04 Computer chassis identification method
AU41062/99A AU4106299A (en) 1999-02-04 1999-07-22 Computer chassis identification method
JP11229928A JP2000235431A (en) 1999-02-04 1999-08-16 Computer chassis identifying method
KR1019990036082A KR20000056973A (en) 1999-02-04 1999-08-28 Computer chassis identification method
US09/661,001 US6449579B1 (en) 1999-02-04 2000-09-13 Computer chassis identification method

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US09/661,001 Expired - Lifetime US6449579B1 (en) 1999-02-04 2000-09-13 Computer chassis identification method

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US6449579B1 (en) * 1999-02-04 2002-09-10 Dell Usa, L.P. Computer chassis identification method
US20040256045A1 (en) * 2003-06-19 2004-12-23 Carl Reis Positive pressure hot bonder
US20040266232A1 (en) * 2003-03-25 2004-12-30 Urs Mangold ESD system for grounding electronics within an enclosure
US7257547B1 (en) * 1999-08-20 2007-08-14 World Picom Corporation Service managing system
US20100311254A1 (en) * 2009-06-09 2010-12-09 Hon Hai Precision Industry Co., Ltd. Electronic device with emi shield spring device
CN104573758A (en) * 2013-10-17 2015-04-29 Abb有限公司 Method and system for detection of a circuit board to be installed in an apparatus and apparatus
US9280357B2 (en) 2011-07-12 2016-03-08 Hewlett-Packard Development Company, L.P. Configuration based on chassis identifications
WO2016190878A1 (en) * 2015-05-28 2016-12-01 Hewlett-Packard Development Company, L.P. Printed circuit board assemblies

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US6661334B1 (en) * 2000-09-26 2003-12-09 Hewlett-Packard Development Company, L.P. Methods and apparatus for verifying the installation of components in a system
US7200148B1 (en) * 2002-06-28 2007-04-03 Bellsouth Intellectual Property Corp. System and method for analyzing asynchronous transfer mode communications
US7403927B2 (en) 2004-01-23 2008-07-22 Dell Products L.P. Method of manufacturing an item of build-to-order equipment
DE102018101903B3 (en) * 2018-01-29 2019-03-28 Fujitsu Technology Solutions Intellectual Property Gmbh Electrical apparatus, circuit board and method for detecting a type of housing of an electrical device

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